有机化学    

综述与进展

弱作用基有机发光材料

沈钇灼#,a, 罗康为#,a, 徐清洋a,b,c, 张鉴予d, 孙景志a,c, 张浩可*,a,b,c, 唐本忠*,a,e   

  1. a高分子合成与功能构造教育部重点实验室,高分子科学与工程学系,浙江大学,杭州,310058;
    b浙江-以色列自组装功能材料联合实验室,浙江大学杭州国际科创中心,浙江大学,杭州,311215;
    c生命健康研究中心大健康材料分中心,浙江大学绍兴研究院,浙江大学,绍兴,312000;
    dStratingh化学研究所,格罗宁根大学,格罗宁根,荷兰,9747 AG;
    e理工学院,深圳分子聚集体科学与工程研究院,香港中文大学(深圳),深圳,518172
  • 收稿日期:2024-04-29 修回日期:2024-05-30
  • 基金资助:
    国家自然科学基金(No.22205197)和浙江大学大学生科研训练项目(No.X2023349)的资助.

Weak Interaction-based Organic Luminescent Materials

Yizhuo Shen#,a, Kangwei Luo#,a, Qingyang Xua,b,c, Jianyu Zhangd, Jing Zhi Suna,c, Haoke Zhang*,a,b,c, Ben Zhong Tang*,a,e   

  1. aMOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058;
    bZhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215;
    cCentre of Healthcare Materials, Shaoxing Institute, Zhejiang University, Shaoxing 312000;
    dStratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;
    eSchool of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172
  • Received:2024-04-29 Revised:2024-05-30
  • Contact: *E-mail: zhanghaoke@zju.edu.cn (H.Z.); tangbenz@cuhk.edu.cn (B.Z.T.)
  • About author:# These authors contributed equally to this work.
  • Supported by:
    National Natural Science Foundation of China (No. 22205197) and the Student Research Training Program of ZJU (No.X2023349)

近年来,在非共轭甚至完全不含π电子的结构中发现的反常发光现象引起了人们的广泛关注。然而,由于其发光机制不清以及发光性能较差,导致这一领域的发展较为缓慢。在本文中,我们总结了近年来在此类弱作用基发光材料的空间共轭机理研究及性能调控方面的最新研究进展。首先,基于非共轭多芳基烷烃机理研究模型,提出了弱作用基发光材料的空间共轭机制,并开发了空间共轭的构象和基元电子结构调控策略,基于这些策略成功开发出了高效率全光色发射的弱作用基发光聚合物。与此同时,研究发现空间共轭在传统具有共轭结构的扭转分子中也广泛存在,被认为是聚集诱导发光效应的一个重要发光机理。

关键词: 空间共轭, 弱相互作用, 荧光, 多芳基烷烃, 聚集诱导发光

In recent years, the abnormal luminescent phenomena discovered in non-conjugated structures or even lacking π-electrons have drawn widespread attention. However, due to unclear luminescent mechanisms and poor luminescent performance, the development in this field has been relatively slow. In this review, we summarize the latest research progress in the through-space conjugation (TSC) mechanism and performance regulation of weak interaction-based luminescent materials in recent years. Firstly, based on the mechanism research model of non-conjugated multiarylalkanes, the TSC mechanism of weak interaction-based luminescent materials is proposed. We have also developed strategies for regulating TSC intensity by changing the conformation of molecules and the electronic structure of subunits, leading to the successful development of weak interaction-based luminescent polymers with highly efficient full-color emission. Meanwhile, it is found that TSC widely exists in twisted molecules with π-conjugated structure, believed to be an important luminescent mechanism for aggregation-induced emission effect.

Key words: through-space conjugation, weak interaction, fluorescence, multiarylalkanes, aggregation-induced emission